"Outlet" is a generic term for all branch type connections. They can come with threaded, socket-weld, and butt-weld end connections. The most common types are used in place of a tee. A hole is cut in the side of the pipe, the outlet is welded in place over the hole and then the additional length of pipe is attached to the outlet.
Similar to reducing tees, outlets are usually described by two sizes. The Run or Header size refers to the pipe on which the outlet is mounted. The Outlet or Branch size refers to the length of pipe branching off of the run.
This type of fitting is contoured to match the curve on the Header Pipe and beveled on the Branch side to mate up with a beveled piece of the branch pipe.
In addition, various other types of outlets are available such as: 45 degree lateral outlets which branch out on a 45 degree angle, elbow outlets which sit on the radius of a 90 degree elbow and nipple outlets which combine a nipple length (usually 3 1/2" long) with an outlet. |
|
|
| Correlation of Fittings Class With Schedule Number or Wall Designation of Run for Calculation of Ratings |
| CLASS OF FITTING |
TYPE |
BRANCH SIZE |
PIPE WALL FOR
RATING BASIS |
| Standard |
Buttwelding |
NPS1/8-24 |
Standard |
| Extra Strong |
Buttwelding |
NPS1/8-24 |
Extra Strong |
| Schedule 160 |
Buttwelding |
NPS1/2-6 |
Schedule 160 |
| 3000 |
Threaded&Socket welding |
NPS1/8-4 |
Extra Strong |
| 6000 |
Threaded&Socket welding |
NPS1/2-2 |
Schedule 160 |
|
|
|
 |
| Butt Welding Outlet |
|
|
|
Nominal Pipe Size
of Run Pipe |
Nominal Pipe Size
of Outlet Pipe |
Face of Fitting to Crotch |
Outside Diameter of Fitting |
| DN |
NPS |
DN |
NPS |
A |
D1 min |
| STD |
XS |
SCH160 |
STD |
XS |
SCH160 |
| 8-900 |
1/4-36 |
6 |
1/8 |
16 |
16 |
- |
24 |
24 |
- |
| 10-900 |
3/8-36 |
8 |
1/4 |
16 |
16 |
- |
26 |
26 |
- |
| 15-900 |
1/2-36 |
10 |
3/8 |
19 |
19 |
- |
30 |
30 |
- |
| 20-900 |
3/4-36 |
15 |
1/2 |
19 |
19 |
28 |
36 |
36 |
36 |
| 25-900 |
1-36 |
20 |
3/4 |
22 |
22 |
32 |
43 |
43 |
46 |
| 32-900 |
1 1/4-36 |
25 |
1 |
27 |
27 |
38 |
55 |
55 |
51 |
| 40-900 |
1 1/2-36 |
32 |
1 1/4 |
32 |
32 |
44 |
66 |
66 |
63 |
| 50-900 |
2-36 |
40 |
1 1/2 |
33 |
33 |
51 |
74 |
74 |
71 |
| 65-900 |
2 1/2-36 |
50 |
2 |
38 |
38 |
55 |
90 |
90 |
82 |
| 80-900 |
3-36 |
65 |
2 1/2 |
41 |
41 |
62 |
104 |
104 |
98 |
| 90-900 |
3 1/2-36 |
80 |
3 |
44 |
44 |
73 |
124 |
124 |
122 |
| 100-900 |
4-36 |
90 |
3 1/2 |
48 |
48 |
|
138 |
138 |
- |
| 125-900 |
5-36 |
100 |
4 |
51 |
51 |
84 |
154 |
154 |
154 |
| 150-900 |
6-36 |
125 |
5 |
57 |
57 |
94 |
187 |
187 |
188 |
| 200-900 |
8-36 |
150 |
6 |
60 |
78 |
105 |
213 |
227 |
222 |
| 250-900 |
10-36 |
200 |
8 |
70 |
99 |
- |
265 |
292 |
- |
| 300-900 |
12-36 |
250 |
10 |
78 |
94 |
- |
323 |
325 |
- |
| 350-900 |
14-36 |
300 |
12 |
86 |
103 |
- |
379 |
381 |
- |
| 400-900 |
16-36 |
350 |
14 |
89 |
100 |
- |
411 |
415 |
- |
| 450-900 |
18-36 |
400 |
16 |
94 |
106 |
- |
465 |
468 |
- |
| 500-900 |
20-36 |
450 |
18 |
97 |
111 |
- |
522 |
525 |
- |
| 550-900 |
22-36 |
500 |
20 |
102 |
119 |
- |
573 |
584 |
- |
| 650-900 |
26-36 |
600 |
24 |
116 |
140 |
- |
690 |
708 |
- |
|
|
|
 |
| Socket welding Outlet |
|
|
|
Nominal Pipe Size
of Run Pipe |
Nominal Pipe Size
of Outlet Pipe |
Face of Fitting
to Crotch |
Outside Diameter
of Fitting |
Outside Diameter
at End of Fitting |
| DN |
NPS |
DN |
NPS |
A |
D1 min |
D2 min |
| 3000 |
6000 |
3000 |
6000 |
3000 |
6000 |
| 8-900 |
1/4-36 |
6 |
1/8 |
20 |
- |
27 |
- |
22 |
- |
| 10-900 |
3/8-36 |
8 |
1/4 |
20 |
- |
27 |
- |
22 |
- |
| 15-900 |
1/2-36 |
10 |
3/8 |
23 |
- |
30 |
- |
26 |
- |
| 20-900 |
3/4-36 |
15 |
1/2 |
26 |
34 |
36 |
47 |
33 |
42 |
| 25-900 |
1-36 |
20 |
3/4 |
29 |
38 |
43 |
53 |
39 |
48 |
| 32-900 |
1 1/4-36 |
25 |
1 |
35 |
42 |
55 |
63 |
48 |
58 |
| 40-900 |
1 1/2-36 |
32 |
1 1/4 |
35 |
43 |
66 |
74 |
58 |
67 |
| 50-900 |
2-36 |
40 |
1 1/2 |
37 |
45 |
75 |
83 |
64 |
77 |
| 65-900 |
2 1/2-36 |
50 |
2 |
40 |
53 |
90 |
104 |
77 |
93 |
| 80-900 |
3-36 |
65 |
2 1/2 |
41 |
- |
105 |
- |
94 |
- |
| 90-900 |
3 1/2-36 |
80 |
3 |
46 |
- |
124 |
- |
114 |
- |
| 125-900 |
5-36 |
100 |
4 |
49 |
- |
154 |
- |
140 |
- |
|
|
|
 |
| Threaded Outlet |
|
|
|
Nominal Pipe Size
of Run Pipe |
Nominal Pipe Size
of Outlet Pipe |
Face of Fitting
to Crotch |
Outside Diameter
of Fitting |
Outside Diameter
at End of Fitting |
| DN |
NPS |
DN |
NPS |
A |
D1 min |
D2 min |
| 3000 |
6000 |
3000 |
6000 |
3000 |
6000 |
| 8-900 |
1/4-36 |
6 |
1/8 |
19 |
- |
27 |
- |
22 |
- |
| 10-900 |
3/8-36 |
8 |
1/4 |
19 |
- |
27 |
- |
22 |
- |
| 15-900 |
1/2-36 |
10 |
3/8 |
21 |
- |
30 |
- |
25 |
- |
| 20-900 |
3/4-36 |
15 |
1/2 |
25 |
32 |
38 |
45 |
33 |
42 |
| 25-900 |
1-36 |
20 |
3/4 |
27 |
37 |
47 |
52 |
39 |
48 |
| 32-900 |
1 1/4-36 |
25 |
1 |
33 |
40 |
56 |
63 |
48 |
58 |
| 40-900 |
1 1/2-36 |
32 |
1 1/4 |
33 |
41 |
66 |
72 |
58 |
67 |
| 50-900 |
2-36 |
40 |
1 1/2 |
35 |
43 |
75 |
83 |
64 |
77 |
| 65-900 |
2 1/2-36 |
50 |
2 |
38 |
52 |
90 |
104 |
77 |
93 |
| 80-900 |
3-36 |
65 |
2 1/2 |
46 |
- |
105 |
- |
94 |
- |
| 90-900 |
3 1/2-36 |
80 |
3 |
51 |
- |
124 |
- |
114 |
- |
| 125-900 |
5-36 |
100 |
4 |
57 |
- |
154 |
- |
140 |
- |
|
|
|
